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Author Topic: Nose-down on Eibach springs  (Read 2345 times)

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GastronomicKleptomaniac

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Nose-down on Eibach springs
« on: 21 January 2020, 17:31:30 »

I'm slowly working on Zeke (ex-plod, 3.2 FL saloon), going through all the jobs I need to do. I fitted B4s and Eibach -30mm springs a couple of years ago. Along with, IIRC, new top mounts (and a lot of other bits, to make my credit card melt). Ever since fitting, he's always sat nose down, more than seems normal. It gets worse when I hoist my fat backside in there...

Is there anything I should be looking at to correct this? I did get the alignment all done and all the spring seating checked but don't mind having it redone as necessary (my list is long enough...!).

FWIW the MV6 is on B6s and Maxtrac (I think) springs but maintains its level stance.
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Doctor Gollum

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Re: Nose-down on Eibach springs
« Reply #1 on: 21 January 2020, 19:50:34 »

Obtain and fit V6 front springs ::)
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GastronomicKleptomaniac

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Re: Nose-down on Eibach springs
« Reply #2 on: 21 January 2020, 20:10:03 »

Obtain and fit V6 front springs ::)

It had some. I fitted the full kit intending it to sit as the other one, which it clearly isn't... Dr Facetious ;)
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Re: Nose-down on Eibach springs
« Reply #3 on: 21 January 2020, 20:22:29 »

You mis understand. The springs are designed for different weights regardless of spring manufacturer.

V6 fronts are, iirc, 1080kgs, and four pots are 980kgs. Lowering springs are shorter with more coils, but still have to carry the weight.

Ergo, if the front sits too low then you need V6 springs... ::)

Assuming that the arse end isn't sitting high of course.  ;D
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Re: Nose-down on Eibach springs
« Reply #4 on: 21 January 2020, 20:27:57 »

That's to say, Irmscher listed four lowering kits for the Omega...
1. Saloon 4 pot.
2. Saloon v6/diesel.
3. Estate 4 pot.
4. Estate v6/diesel.  :y
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Re: Nose-down on Eibach springs
« Reply #5 on: 21 January 2020, 20:51:48 »

We have the opposite problem with Eibach springs on the front of Lotus Carlton's they always seem to sit too high despite being modelled on original new springs and with access to original drawings.  Eibach say that because of the material they use and the warranty that they give against sagging, perhaps they hold their height better than OE springs which do sag with age, and we get used to the lower ride height that gives as cars get older.  Unfortunately with springs, in my experience with the above and with racing cars over the years, either get coil overs or be prepared to go through a lot of different combinations in a trial and error process to get the result that you want.
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GastronomicKleptomaniac

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Re: Nose-down on Eibach springs
« Reply #6 on: 21 January 2020, 21:42:09 »

That's to say, Irmscher listed four lowering kits for the Omega...
1. Saloon 4 pot.
2. Saloon v6/diesel.
3. Estate 4 pot.
4. Estate v6/diesel.  :y

Definitely ordered the correct V6 ones... though I must admit I didn't check the part number when they arrived. And the box is long, long gone...  :P

I'll have a scout about and see about replacing the fronts to see what happens...
« Last Edit: 21 January 2020, 21:52:30 by GastronomicKleptomaniac »
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Re: Nose-down on Eibach springs
« Reply #7 on: 21 January 2020, 23:00:01 »

Pedders spring kit for the Monaro could be an alternative option as the spring weights are the same. Not tested the idea though as the only lowered Omega I had was fitted with Irmscher springs...

Mutha Jugs might be able to shed some light as I believe his white missile has Eibachs on it :y
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Re: Nose-down on Eibach springs
« Reply #8 on: 21 January 2020, 23:07:15 »

Full kit ordered, only £20 more than just the front pair of matching springs. I'm loathe to pull bits off the MV6 in the meantime because then I'd only have to rebuild that even further...

If it fixes it, there'll be a set of lowering springs for a four-pot coming up for sale. Can I heck as like find any order receipts for the springs, doing the maths, it was three years (and about 3k miles) since it was done!

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Re: Nose-down on Eibach springs
« Reply #9 on: 21 January 2020, 23:13:00 »

Rear springs are the same weight regardless of engine, but are different for saloon/estate, so you'll only need to swap the fronts :y
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Re: Nose-down on Eibach springs
« Reply #10 on: 22 January 2020, 08:06:40 »

Can you measure the ride height on the front? I have three running Eibach springs (two Eibach all round and one Eibach on the front and MV6 on the rear) so can compare.
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GastronomicKleptomaniac

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Re: Nose-down on Eibach springs
« Reply #11 on: 22 January 2020, 11:28:29 »

Rear springs are the same weight regardless of engine, but are different for saloon/estate, so you'll only need to swap the fronts :y

I thought that, but since the car's going to be up in the air anyway (lots going on!) I'm going to do all four. Then I can work out the miles on the old set and sell them as a matching set :y
Can you measure the ride height on the front? I have three running Eibach springs (two Eibach all round and one Eibach on the front and MV6 on the rear) so can compare.

It's silly low. Has been since they were on, but life has been hectic so it's only now I've got round to doing the full, to use the sort of term found in Practical Classics*, "recommissioning". I'll measure before and after once the springs land.

*Yes, it's a classic. Shoosh.
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LC0112G

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Re: Nose-down on Eibach springs
« Reply #12 on: 22 January 2020, 11:49:44 »

If it helps (probably doesn't) this is what I fitted to my car 2 years ago :

http://www.omegaowners.com/forum/index.php?topic=141570.msg1842932#msg1842932

It's currently sitting with a front ride height of 650mm (measured ground to top of front wing wheel arch). Tyres are 235-45-17 Goodyear Ultragrips.
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Re: Nose-down on Eibach springs
« Reply #13 on: 22 January 2020, 12:38:52 »

670mm rings a bell for the standard wheel arch height. LSC(lowered sports chassis, Sport/MV6) = a15mm drop and Irmscher = a 30mm drop. Below is a list of pictures covering most variations, (order reversed as I grouped them to one link):

https://photos.app.goo.gl/99oewkFYUCpFkYCq5

Dark grey CD estate:
This is how an estate sits on OE front springs and HD rears, (car is a Desmond, but same ride height due to the lighter spring weights, no SL)...

White estate with Irmscher twin spoke 18's and kit:
This is how an estate sits on factory Plod springs with SL (ignore the wheels, they are exactly the same outside diameter as the car in the first picture)...

Black estate with Irmscher Sports Stars and body kit: Standard Elite estate, (with SL, again ignore the wheels as same outside diameter as the first car)...

Black estate, two pics with Irmscher twin spokes and post suspension rebuild:
This is how the estate sits on Irmscher springs, (same wheels as previous and SL deleted)...

Silver saloon with MV6/late Elite wheels:
Standard LSC, (car is a Desmond Sport with 27k miles, so about as close to factory new as you can get)...

Silver saloon:
Standard V6 CDX, (not the best picture, but the difference in ride height should be clear compared to the Sport)...
« Last Edit: 22 January 2020, 12:55:39 by Doctor Gollum »
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GastronomicKleptomaniac

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Re: Nose-down on Eibach springs
« Reply #14 on: 22 January 2020, 15:34:26 »

Cheers DG! Looking at them, my MV6 sits a wee bit lower than your silver Sport - and looks just about right. Zeke (with the suspected wrong springs) sits as if I've got onto the bonnet rather than into the drivers seat...! Apparently the new springs are en route so shouldn't be too long.

Just got a hundred other bits to do...!
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GastronomicKleptomaniac

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Re: Nose-down on Eibach springs
« Reply #15 on: 07 February 2020, 19:49:42 »

Exciting update. Everything is back together on the outside and it's sitting a lot better. It no longer looks like I'm sitting on the bonnet... ;)

Springs haven't settled yet but when after I've driven it for a bit I'll measure the ride height for comparison. Cheers again DG :D
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